Sharp EL-2196BL is a 12-digit AC-powered desktop calculator with two-color printer. It features a large display and quick, crisp printing at approximately 3.5 lines/sec on standard size paper rolls, with positive numbers in black and negative numbers in red. The tax keys allow for easy tax calculations, while the mark-up key helps you perform mark-ups, cost/sell/margin calculations, percent changes, and automatic add-on/discounts. Additional features include floating (F) or fixed decimal (6,3,2,1,0), adding and constant modes, item count, print and non-print settings, and round up/down selector. The convenient AC power means no batteries to run down.